04/28/2026
Here’s the simple version of an allergy reaction: an allergen like dust shows up, immune cells recognize it, link up to it, and then set off an “explosion” of inflammatory chemicals like histamine. That’s what causes itchiness, mucus, and all the miserable symptoms. Immunotherapy works by helping your body make “blocking antibodies” so those links cannot connect as easily. No link up means less reaction. Exposure is controlled and can be delivered under the skin, under the tongue, or through the mouth lining.